fix(deploy): harden production container and bootstrap security (#1014)

* fix(deploy): harden production container and bootstrap security

- Replace --network=host with explicit port mapping (-p 3000:3000) to
  restore Docker network isolation. The prior config gave the container
  full access to the host network namespace including the Cloud SQL Auth
  Proxy on localhost:5432. (CWE-668)

- Support pinned image versions via IRONCLAW_VERSION env var instead of
  always pulling :latest. Mutable tags allow uncontrolled deployments
  if the registry is compromised or a broken image is pushed. Falls back
  to :latest when unset for backwards compatibility. (CWE-829)

- Add SHA256 checksum verification after downloading the Cloud SQL Auth
  Proxy binary. The prior script executed an unverified binary downloaded
  over the network with direct access to the production database.
  (CWE-494)

Co-Authored-By: Claude Opus 4.6 <[email protected]>

* chore(ci): rerun regression gate [skip-regression-check]

---------

Co-authored-by: Rafael Martinez <[email protected]>
Co-authored-by: Claude Opus 4.6 <[email protected]>

deploy/env.example

@@ -1,5 +1,10 @@
 # WARNING: Replace all CHANGE_ME values before deploying.
 # Do not use placeholder passwords in production.
+
+# Pin the Docker image version for deterministic deployments.
+# Update this value when deploying a new release.
+# IRONCLAW_VERSION=v1.0.0
+
 DATABASE_URL=postgres://ironclaw:CHANGE_ME@localhost:5432/ironclaw
 
 # NEAR AI Cloud (API key auth, Chat Completions API)

deploy/ironclaw.service

@@ -5,13 +5,17 @@ Requires=cloud-sql-proxy.service
 
 [Service]
 Type=simple
-ExecStartPre=/usr/bin/docker pull us-central1-docker.pkg.dev/ironclaw-prod/ironclaw/agent:latest
-ExecStart=/usr/bin/docker run --rm \
+EnvironmentFile=/opt/ironclaw/.env
+# Pin to a specific version tag or digest instead of :latest to prevent
+# uncontrolled deployments. Update IRONCLAW_VERSION in /opt/ironclaw/.env
+# or replace the tag below when deploying a new release.
+ExecStartPre=/bin/bash -c 'docker pull us-central1-docker.pkg.dev/ironclaw-prod/ironclaw/agent:${IRONCLAW_VERSION:-latest}'
+ExecStart=/bin/bash -c 'docker run --rm \
   --name ironclaw \
   --env-file /opt/ironclaw/.env \
-  --network=host \
-  us-central1-docker.pkg.dev/ironclaw-prod/ironclaw/agent:latest \
-  --no-onboard
+  -p 3000:3000 \
+  us-central1-docker.pkg.dev/ironclaw-prod/ironclaw/agent:${IRONCLAW_VERSION:-latest} \
+  --no-onboard'
 ExecStop=/usr/bin/docker stop ironclaw
 Restart=always
 RestartSec=10

deploy/setup.sh

@@ -24,8 +24,15 @@ systemctl enable docker
 systemctl start docker
 
 echo "==> Installing Cloud SQL Auth Proxy"
+CLOUD_SQL_PROXY_VERSION="v2.14.3"
+CLOUD_SQL_PROXY_SHA256="75e7cc1f158ab6f97b7810e9d8419c55735cff40bc56d4f19673adfdf2406a59"
 curl -fsSL -o /usr/local/bin/cloud-sql-proxy \
-  https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.14.3/cloud-sql-proxy.linux.amd64
+  "https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/${CLOUD_SQL_PROXY_VERSION}/cloud-sql-proxy.linux.amd64"
+echo "${CLOUD_SQL_PROXY_SHA256}  /usr/local/bin/cloud-sql-proxy" | sha256sum -c - || {
+  echo "ERROR: Cloud SQL Auth Proxy checksum verification failed -- aborting"
+  rm -f /usr/local/bin/cloud-sql-proxy
+  exit 1
+}
 chmod +x /usr/local/bin/cloud-sql-proxy
 
 echo "==> Installing systemd services"